CN105179349B - A kind of pressure automatic switchover selector valve - Google Patents
A kind of pressure automatic switchover selector valve Download PDFInfo
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- CN105179349B CN105179349B CN201510610456.4A CN201510610456A CN105179349B CN 105179349 B CN105179349 B CN 105179349B CN 201510610456 A CN201510610456 A CN 201510610456A CN 105179349 B CN105179349 B CN 105179349B
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Abstract
The invention belongs to hydraulic control valve technical field, to solve technical problem of the traditional method to the difficult and drawback of the selection or detection of pressure switch signal in same fluid pressure line, there is provided a kind of pressure automatic switchover selector valve, including pressure adjusting screw, pressure latch, valve body, adjust spring, spring base, valve element, valve element O-ring and end cap, spring cavity is opened up in the middle of the side of valve body, spring base is arranged on right-hand member inside spring cavity, pressure adjusting screw is arranged on inside spring cavity left end and outer end is extended to outside valve body, arrange between pressure adjusting screw and spring base and adjust spring, valve element is arranged on the right side of valve body inner spring seat, valve element O-ring is provided with valve element, end cap is arranged on valve body right-hand member, oil inlet P is set on end cap, low pressure hydraulic fluid port P1 is provided with valve body, high pressure hydraulic fluid port P2 and oil return opening R.Present configuration is simple, simply and flexibly realizes the switching to pressure signal and selects, while realize connecting inoperative oil circuit with fuel tank.
Description
Technical field
The invention belongs to hydraulic control valve technical field, and in particular to a kind of pressure automatic switchover selector valve.
Background technology
In hydraulic system, Jing is commonly present the oil circuit of high-low pressure conversion, needs to set with a certain pressure when the oil circuit is run into
When high-low pressure signal of the value as a control separation or to differing greatly carries out the situation of accurate measurements, it is desirable to pressure
Force signal carries out automatic switchover selection.This principle of work and power is realized with the technical method of traditional pure hydraulic pressure or combination of electric and hydraulic,
Complexity and the trouble point of system can not only be increased, while design and the maintenance cost of system can be increased, and this kind of method reality
Apply big difficulty, versatility and motility poor.
The content of the invention
The present invention to solve traditional method to the difficulty of the selection or detection of pressure switch signal in same fluid pressure line and
A kind of technical problem of drawback, there is provided pressure automatic switchover selector valve.
The technical solution used in the present invention is as follows：
A kind of pressure automatic switchover selector valve, including pressure adjusting screw, pressure latch, valve body, regulation spring, spring
Seat, valve element, valve element O-ring and end cap, open up spring cavity in the middle of the side of valve body, and spring base is arranged on the right side inside spring cavity
End, pressure adjusting screw is arranged on left end inside spring cavity and pressure adjusting screw outer end extends to the outside of valve body, in spring
Arrange between intracavity portion pressure adjusting screw and spring base and adjust spring, valve element is arranged in valve body the right side for being located at spring base,
Valve element O-ring is provided with valve element, end cap is arranged on the right-hand member of valve body, and oil inlet P is provided with the end cap, the valve body
Low pressure hydraulic fluid port P1 and high pressure hydraulic fluid port P2 is respectively arranged with lower surface, oil return opening R is provided with the upper surface of valve body, in valve body
The runner d and runner e for communicating is provided with, one end of runner d is communicated with spring cavity, and the other end extends to the outer surface of valve body and is provided with
Pressure latch, one end of runner e are communicated with oil return opening R, and the other end extends to the outer surface of valve body and is provided with pressure latch；It is described
Runner a and runner b is respectively equipped with vertically in valve element, one end of runner a is communicated with spring cavity, one end of runner b and oil inlet P
Communicate, in valve element, be radially provided with runner c, runner c is communicated with oil inlet P, when the oil pressure of oil inlet P is less than the pressure for adjusting spring
During setting value, runner c is communicated with low pressure hydraulic fluid port P1, and the other end of runner a is communicated with high pressure hydraulic fluid port P2, the other end of runner b with
High pressure hydraulic fluid port P2 is not communicated with, and oil inlet P 1 is not communicated with oil return opening R, when the oil pressure of oil inlet P is set more than the pressure for adjusting spring
During definite value, the other end of runner b is communicated with high pressure hydraulic fluid port P2, and runner c is not communicated with low pressure hydraulic fluid port P1, the other end of runner a with
High pressure hydraulic fluid port P2 is not communicated with, and low pressure hydraulic fluid port P1 is communicated with oil return opening R.
One end end face that end cap is connected with valve body is provided with O-shaped sealed groove, O-shaped sealed groove and arranges end cap O-ring.
Beneficial effects of the present invention：
1. present configuration is simple, be easy to making, simply and flexibly realizes the switching to pressure signal and selects, while real
Show and inoperative oil circuit has been connected with fuel tank, and versatility is good.
2. the rational valve body of the present invention, valve core structure and cleverly runner design so that whole valve arrangement is compact, it is easy to plus
Work, reduces cost.
3. the visual application target of pressure automatic switchover selector valve and the difference of occasion of the present invention, is designed to different specifications
And precision, different hydraulic system applications fields are applicable to, are had a good application prospect.
Description of the drawings
Fig. 1 is the internal structure schematic diagram of the present invention；
In figure：1- pressure adjusting screws, 2- pressure latches, 3- valve bodies, 4- adjust spring, 5- spring bases, 6- valve elements, 7- valves
Core O-ring, 8- end cap O-rings, 9- end caps, 10- spring cavitys.
Specific embodiment
As shown in figure 1, a kind of pressure automatic switchover selector valve, including pressure adjusting screw 1, pressure latch 2, valve body 3, tune
Section spring 4, spring base 5, valve element 6, valve element O-ring 7 and end cap 9, open up spring cavity 10, spring base in the middle of the side of valve body 3
5 are arranged on the right-hand member inside spring cavity 10, and pressure adjusting screw 1 is arranged on 10 inside left end of spring cavity and pressure adjusting screw 1
Outer end extends to the outside of valve body 3, arranges and adjust spring 4 between 10 internal pressure adjusting screw rod 1 of spring cavity and spring base 5,
Valve element 6 is arranged in valve body 3 right side for being located at spring base 5, and valve element O-ring 7 is provided with valve element 6, and end cap 9 is arranged on valve body 3
Right-hand member, be provided with oil inlet P on the end cap 9；Low pressure hydraulic fluid port P1 and high pressure are respectively arranged with the lower surface of the valve body 3
Hydraulic fluid port P2, is provided with oil return opening R on the upper surface of valve body 3, the runner d and runner e being connected is provided with valve body 3, runner d's
One end is communicated with spring cavity 10, and the other end extends to 3 outer surface of valve body and is provided with pressure latch 2, one end of runner e and oil return opening
R is communicated, and the other end extends to the outer surface of valve body 3 and is provided with pressure latch 2；Runner a is respectively equipped with vertically in the valve element 6
With runner b, one end of runner a communicated with spring cavity 10, and one end of runner b is communicated with oil inlet P, is radially provided with stream in valve element 6
Road c, runner c are communicated with oil inlet P, when the oil pressure of oil inlet P is less than the pressure set points of spring 4 are adjusted, runner c and low pressure
Hydraulic fluid port P1 is communicated, and the other end of runner a is communicated with high pressure hydraulic fluid port P2, and the other end and the high pressure hydraulic fluid port P2 of runner b are not communicated with, oil-feed
Mouth P1 and oil return opening R is not communicated with, when the oil pressure of oil inlet P is more than the pressure set points of spring 4 are adjusted, the other end of runner b
Communicate with high pressure hydraulic fluid port P2, runner c is not communicated with low pressure hydraulic fluid port P1, the other end and the high pressure hydraulic fluid port P2 of runner a are not communicated with, low pressure
Hydraulic fluid port P1 is communicated with oil return opening R.
In order to prevent fluid from revealing, one end end face that end cap 9 is connected with valve body 3 is provided with O-shaped sealed groove, O-shaped sealing
End cap O-ring 8 is set in groove.
The operation principle of the present invention：Pressure oil is entered from oil inlet P, and pressure is less than adjusting spring 4 at the oil inlet P
During pressure set points, oil inlet P is by the opening and low pressure between 3 seal face of runner c and valve element 6 and valve body on valve element 6
Hydraulic fluid port P1 connections, and low pressure hydraulic fluid port P1 and oil return opening R is by the shoulder blocking of the shoulder on valve element 6 and valve body 3, oil inlet P and height
Valve opening face of the oil circuit between force feed mouth P2 by the shoulder on valve element 6 with valve body 3 blocks, and high pressure hydraulic fluid port P2 is by valve element 6
Runner a is communicated with spring cavity 10, and then the runner d and runner e on Jing valve bodies 3 and oil return opening R is connected；The pressure at the oil inlet P
During more than adjusting the pressure set points of spring 4, pressure oil makes 6 switching position of valve element, and now, oil inlet P leads to low pressure hydraulic fluid port P1
Oil circuit blocking is sealed by the seal face on valve element 6 and valve body 3 and valve element O-ring 7, platforms of the low pressure hydraulic fluid port P1 by valve element 6
Opening between the groove of shoulder and valve body 7 is connected with oil return opening R, and oil inlet P is by the runner b's and valve element 6 on valve element 6
Opening between the groove of shoulder and valve body 3 is connected with high pressure hydraulic fluid port P2, and the oil circuit between high pressure hydraulic fluid port P2 and oil return opening R is by valve
Shoulder on core 6 is blocked with the valve opening face of valve body 3.High-low pressure frequent switching working oil path pressure signal is realized thus
Automatically switch and select, while realizing the protection to low pressure oil way.
The course of work of the present invention：When monitoring or extract the pressure of a certain pressure frequent transitions oil circuit, the valve is entered
Hydraulic fluid port P accesses corresponding oil circuit, and oil return opening R connected tanks set high-low pressure switching pressure value according to actually used demand first, and
Low pressure hydraulic fluid port P1, high pressure hydraulic fluid port P2 are connected on corresponding pressure gauge or oil circuit control, when pressure is less than setting pressure, low pressure
Hydraulic fluid port P1 selects low pressure force signal to be monitored, controls or lead to corresponding executive component, and high pressure hydraulic fluid port P2 is cut off with pressure oil,
High pressure hydraulic fluid port P2 and oil return opening R is connected simultaneously；When pressure is higher than setting pressure, high pressure hydraulic fluid port P2 selects high pressure force signal to carry out
Corresponding executive component is led in monitoring, control, and low pressure hydraulic fluid port P1 is cut off with pressure oil, while low pressure hydraulic fluid port P1 and oil return opening R
Connect.
When the present invention is used, setting pressure is adjusted according to actual demand, pressure automatically switches according to actual condition and select
The each hydraulic fluid port of valve correctly accesses correspondence oil circuit.If desired, regarding hydraulic system situation, the valve of different size and precision can be made, with
Adapt to corresponding use condition or operating mode.Realize choosing the pressure signal of pressure frequent switching oil circuit using this valve, have
The characteristics of simple, flexible operation and highly versatile, while the cost and difficulty for realizing the principle of work and power is reduced, so this
Plant pressure automatic switchover selector valve and there is good application prospect.
Claims (2)
1. a kind of pressure automatic switchover selector valve, it is characterised in that：Including pressure adjusting screw（1）, pressure latch（2）, valve body
（3）, adjust spring（4）, spring base（5）, valve element（6）, valve element O-ring（7）And end cap（9）, in valve body（3）Side in the middle of
Open up spring cavity（10）, spring base（5）It is arranged on spring cavity（10）Internal right-hand member, pressure adjusting screw（1）It is arranged on spring
Chamber（10）Internal left end and pressure adjusting screw（1）Outer end extends to valve body（3）Outside, in spring cavity（10）Internal pressure is adjusted
Section screw rod（1）With spring base（5）Between arrange adjust spring（4）, valve element（6）It is arranged on valve body（3）It is interior positioned at spring base（5）'s
Right side, valve element（6）On be provided with valve element O-ring（7）, end cap（9）It is arranged on valve body（3）Right-hand member, the end cap（9）Upper setting
There is oil inlet P；The valve body（3）Lower surface on be respectively arranged with low pressure hydraulic fluid port P1 and high pressure hydraulic fluid port P2, valve body（3）Upper end
Oil return opening R is provided with face, in valve body（3）The runner d and runner e being connected, one end of runner d and spring cavity are provided with inside（10）
Communicate, the other end extends to valve body（3）Outer surface is simultaneously provided with pressure latch（2）, one end of runner e is communicated with oil return opening R, another
End extends to valve body（3）Outer surface and be provided with pressure latch（2）；The valve element（6）Runner a and stream are respectively equipped with vertically inside
Road b, one end of runner a and spring cavity（10）Communicate, one end of runner b is communicated with oil inlet P, valve element（6）Stream is radially provided with inside
Road c, runner c are communicated with oil inlet P, when the oil pressure of oil inlet P is less than regulation spring（4）Pressure set points when, runner c with it is low
Force feed mouth P1 is communicated, and the other end of runner a is communicated with high pressure hydraulic fluid port P2, and the other end and the high pressure hydraulic fluid port P2 of runner b are not communicated with, and enter
Hydraulic fluid port P1 is not communicated with oil return opening R, when the oil pressure of oil inlet P is more than regulation spring（4）Pressure set points when, runner b's is another
One end is communicated with high pressure hydraulic fluid port P2, and runner c is not communicated with low pressure hydraulic fluid port P1, and the other end and the high pressure hydraulic fluid port P2 of runner a are not communicated with,
Low pressure hydraulic fluid port P1 is communicated with oil return opening R.
2. a kind of pressure automatic switchover selector valve according to claim 1, it is characterised in that：End cap（9）With valve body（3）Phase
One end end face even is provided with O-shaped sealed groove, O-shaped sealed groove and arranges end cap O-ring（8）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510610456.4A CN105179349B (en) | 2015-09-23 | 2015-09-23 | A kind of pressure automatic switchover selector valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510610456.4A CN105179349B (en) | 2015-09-23 | 2015-09-23 | A kind of pressure automatic switchover selector valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105179349A CN105179349A (en) | 2015-12-23 |
| CN105179349B true CN105179349B (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510610456.4A Active CN105179349B (en) | 2015-09-23 | 2015-09-23 | A kind of pressure automatic switchover selector valve |
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| CN (1) | CN105179349B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180293B (en) * | 2018-01-23 | 2024-06-07 | 潍坊力创电子科技有限公司 | Double-sealing gas injection valve |
| CN109236787B (en) * | 2018-11-22 | 2020-03-31 | 乐清市同丰大鲵驯养繁殖有限公司 | Automatic switching valve |
| CN109723692B (en) * | 2018-12-18 | 2023-11-03 | 浙江三尚智迪科技有限公司 | pressure control valve |
| CN113246223B (en) * | 2021-05-27 | 2022-08-02 | 中煤科工集团沈阳研究院有限公司 | Adjustable ultrahigh-pressure water jet cutting device and using method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE328778B (en) * | 1968-07-11 | 1970-09-21 | Monsun Tison Ab | |
| KR100906434B1 (en) * | 2005-03-10 | 2009-07-09 | 가부시키가이샤 다이요 | Switching valve device and fluid pressure cylinder device |
| US7739943B2 (en) * | 2006-09-20 | 2010-06-22 | Gm Global Technology Operations, Inc. | Vehicular hydraulic system with pressure dump and relief valve arrangement |
| CN202469169U (en) * | 2012-03-16 | 2012-10-03 | 天津天保伍德科技发展有限公司 | Pressure pilot valve |
| CN103452158A (en) * | 2012-05-30 | 2013-12-18 | 株式会社水山重工业 | Cylinder hydraulic loss preventing device of hydraulic breaker |
| CN202629286U (en) * | 2012-06-13 | 2012-12-26 | 山推工程机械股份有限公司 | Change-over valve |
| CN203488472U (en) * | 2013-09-25 | 2014-03-19 | 宁波市恒通液压科技有限公司 | Speed change valve |
| US9625043B2 (en) * | 2013-11-08 | 2017-04-18 | Fisher Controls International Llc | Apparatus to bias spool valves using supply pressure |
| CN204610394U (en) * | 2015-05-14 | 2015-09-02 | 中国飞机强度研究所 | A kind of hydraulic substation |
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